Efficiency and Fairness of Markets CHAPTER 6. When you have completed your study of this chapter,...

Efficiency and Fairness of Markets

CHAPTER 6

When you have completed your study of this chapter, you will be able to

C H A P T E R C H E C K L I S T

Distinguish between value and price and define consumer surplus.

2

Distinguish between cost and price and define producer surplus.

Explain the conditions in which markets are efficient and inefficient.

3

4

Explain the main ideas about fairness and evaluate the fairness of competitive markets and other allocation methods.

5

Describe the alternative methods of allocating resources.

1

6.1 RESOURCE ALLOCATION METHODS

Scare resources might be allocated by using any or some combination of the following methods:

• Market price• Command• Majority rule• Contest• First-come, first-served• Sharing equally• Lottery• Personal characteristics• Force

How does each method work?


Market Price

When a market allocates a scarce resource, the people who get the resource are those who are willing to pay the market price.

Most of the scarce resources that you supply get allocated by market price.

You sell your labor services in a market, and you buy most of what you consume in markets.

For most goods and services, the market turns out to do a good job.


Command

Command system allocates resources by the order (command) of someone in authority.

For example, if you have a job, most likely someone tells you what to do. Your labor time is allocated to specific tasks by command.

A command system works well in organizations with clear lines of authority but badly in an entire economy.


Majority Rule

Majority rule allocates resources in the way that a majority of voters choose.

Societies use majority rule for some of their biggest decisions.

For example, tax rates that allocate resources between private and public use and tax dollars between competing uses such as defense and health care.

Majority rule works well when the decision affects lots of people and self-interest must be suppressed to use resources efficiently.


Contest

A contest allocates resources to a winner (or group of winners).

The most obvious contests are sporting events but they occur in other arenas:

For example, The Oscars are a type of contest.

Contest works well when the efforts of the “players” are hard to monitor and reward directly.


First-Come, First-Served

A first-come, first-served allocates resources to those who are first in line.

Casual restaurants use first-come, first served to allocate tables. Supermarkets also uses first-come, first-served at checkout.

First-come, first-served works best when scarce resources can serve just one person at a time in a sequence.


Sharing Equally

When a resource is shared equally, everyone gets the same amount of it.

You might use this method to share a dessert in a restaurant.

To make sharing equally work, people must be in agreement about its use and implementation.

It works best for small groups who share common goals and ideals.


Lottery

Lotteries allocate resources to those with the winning number, draw the lucky cards, or come up lucky on some other gaming system.

State lotteries and casinos reallocate millions of dollars each year.

But lotteries are more widespread.

For example, the FAA uses lotteries to allocate landing slots at New York’s LaGuardia airport.

Lotteries work well when there is no effective way to distinguish among potential users of a scarce resource.


Personal Characteristics

Personal characteristics allocate resources to those with the “right” characteristics.

For example, people choose marriage partners on the basis of personal characteristics.

But this method gets used in unacceptable ways: allocating the best jobs to white males and discriminating against minorities and women.


Force

Force plays a role in allocating resources.

For example, war has played an enormous role historically in allocating resources.

Theft, taking property of others without their consent, also plays a large role.

But force provides an effective way of allocating resources—for the state to transfer wealth from the rich to the poor and establish the legal framework in which voluntary exchange can take place in markets.

6.2 VALUE, PRICE, CONSUMER SURPLUS

Demand and Marginal Benefit

Buyers distinguish between value and price.• Value is what the buyer gets.• Price is what the buyer pays.

The value of one more unit of a good or service is its marginal benefit.

Marginal benefit can be measured as the maximum price that people are willing to pay for another unit of the good or service.


The consumer will buy one more unit of a good or service if its price is less than or equal to the value the consumer places on it.

A demand curve is a marginal benefit curve.

For example, the demand curve for pizza tells us the dollars worth of other goods and services that people are willing to forgo to consume one more pizza.

That is, the demand curve for pizza shows the value the consumer places on each unit of pizza.


The demand curve shows:

1. The quantity demanded at each price, other things remaining the same.

Figure 6.1 shows demand, willingness to pay, and marginal benefit.


The demand curve shows:

2. The maximum price willingly paid for the last pizza available.

1. The quantity demanded at each price, other things remaining the same.

Figure 6.1 shows demand, willingness to pay, and marginal benefit.


Consumer Surplus

Consumer surplus

The marginal benefit from a good or service minus the price paid for it, summed over the quantity consumed.


1. The price is $1.00 a slice.

2. Lisa buys 20 slices a week and spends $20 on pizza.

3. But Lisa was willing to pay $1.50 for the 10th slice. Her consumer surplus on the 10th slice is $0.50.

4. Lisa’s consumer surplus on the 20 slices she buys is the green triangle.

Figure 6.2shows Lisa’s consumer surplus.

6.3 COST, PRICE, PRODUCER SURPLUS

Supply and Marginal Cost

Sellers distinguish between cost and price.• Cost is what a seller must give up to produce the

good.• Price is what a seller receives when the good is

sold.

The cost of producing one more unit of a good or service is its marginal cost.


The seller will produce one more unit of a good or service if the price for which it can be sold exceeds or equals its marginal cost.

A supply curve is a marginal cost curve.

For example, the supply curve of pizza tells us the dollars worth of other goods and services that firms must forgo to produce one more pizza.

That is, the supply curve of pizza shows the seller’s cost of producing each unit of pizza.


The supply curve shows:

1. The quantity supplied at each price, other things remaining the same.

Figure 6.3 shows supply, minimum supply price, and marginal cost.


The supply curve shows:

2. The minimum price that firms must be offered to supply a given quantity of pizza.

1. The quantity supplied at each price, other things remaining the same.

Figure 6.3 shows supply, minimum supply price, and marginal cost.


Producer Surplus

Producer surplus

The price of a good minus the opportunity cost of producing it, summed over the quantity produced.


1. At $10 a pizza, Max produces 100 pizzas a day.

The minimum price that Max must be offered for the 50th pizza a day is $6.

Figure 6.4 shows Max’s producer surplus.

2. Max’s producer surplus on the 50th pizza is $4.

3. Max’s producer surplus on 100 pizzas a day.

4. Max’s cost of production.

6.4 ARE MARKETS EFFICIENT?

5. Consumer surplus plus

6. Producer surplus is maximized.

3. Marginal benefit curve.

4. When marginal cost equals marginal benefit, quantity is efficient.

2. Marginal cost curve.

Figure 6.5 shows an efficient pizza market

1. Market equilibrium.


In a competitive market:• The demand curve shows buyers’ marginal benefit. • The supply curve shows the sellers’ marginal cost.

So at the equilibrium in a competitive market, marginal benefit equals marginal cost.

Resources are used efficiently.

So the competitive market is efficient.


Total Surplus is Maximized

Total surplus is the sum of consumer surplus and producer surplus.

The competitive equilibrium maximizes total surplus.

Buyers seek the lowest possible price and sellers seek the highest possible price.

But as buyers and sellers pursue their self-interest, the social interest is served.


The Invisible Hand

Adam Smith in the Wealth of Nations (1776) suggested that competitive markets send resources to the uses in which they have the highest value.

Smith believed that each participant in a competitive market is “led by an invisible hand to promote an end which was no part of his intention.”


Underproduction and Overproduction

Inefficiency can occur because:• Too little is produced—underproduction.• Too much is produced—overproduction.


Underproduction

When a firm cuts production to less than the efficient quantity, a deadweight loss is created.

Deadweight loss

The decrease in consumer surplus and producer surplus that results from an inefficient level of production.

The deadweight loss is borne by the entire society. It is a social loss.

If production is 5,000 a day:

Figure 6.6(a) shows the effects of underproduction.

A competitive industry would produce the efficient quantity.

Total surplus is reduced by the amount of the deadweight loss.

Deadweight loss arises.


Underproduction is inefficient.


Overproduction

When the government pays producers a subsidy, the quantity produced exceeds the efficient quantity.

A deadweight loss arises than reduces total surplus to less than its maximum.


If production is 15,000 pizzas:

Figure 6.6(b) shows the effects of overproduction.

Efficient quantity is 10,000.

A deadweight loss arises.

Total surplus is reduced by the amount of the deadweight loss.

Overproduction is inefficient.


Obstacles to Efficiency

Markets generally do a good job of sending resources to where they are most highly valued.

But markets can be inefficient in the face of:• Price and quantity regulations

• Taxes and subsidies

• Externalities

• Public goods and common resources

• Monopoly• High transactions costs


Price and Quantity Regulations

Price regulations sometimes put a block of the price adjustments and lead to underproduction.

Quantity regulations that limit the amount that a farm is permitted to produce also leads to underproduction.


Taxes and Subsidies

Taxes increase the prices paid by buyers and lower the prices received by sellers.

So taxes decrease the quantity produced and lead to underproduction.

Subsidies lower the prices paid by buyers and increase the prices received by sellers.

So subsidies increase the quantity produced and lead to overproduction.


Externalities

An externality is a cost or benefit that affects someone other than the seller or the buyer of a good.

An electric utility creates an external cost by burning coal that creates acid rain.

The utility doesn’t consider this cost when it chooses the quantity of power to produce. Overproduction results.


An apartment owner would provide an external benefit if she installed an smoke detector. But she doesn’t consider her neighbor’s marginal benefit and decides not to install the smoke detector.

The result is underproduction.


Public Goods and Common Resources

A public good benefits everyone and no one can be excluded from its benefits.

It is in everyone’s self-interest to avoid paying for a public good (called the free-rider problem), which leads to underproduction.


A common resource is owned by no one but used by everyone.

It is in everyone’s self interest to ignore the costs of their own use of a common resource that fal on others (called tragedy of the commons), which leads to overproduction.


Monopoly

A monopoly is a firm that has sole provider of a good or service.

The self-interest of a monopoly is to maximize its profit. To do so, a monopoly sets a price to achieve its self-interested goal.

As a result, a monopoly produces too little and underproduction results.


High Transactions Costs

Transactions CostsThe opportunity cost of making trades in a market.

To use market prices as the allocators of scarce resources, it must be worth bearing the opportunity cost of establishing a market.

Some markets are just too costly to operate.

When transactions costs are high, the market might underproduce.


Alternatives to the MarketNo one method allocates resources efficiently. But supplemented by other methods, markets do an amazingly good job.

6.5 ARE MARKETS FAIR?

Two broad and generally conflicting views of fairness are:

• It’s not fair if the result isn’t fair• It’s not fair if the rules aren’t fair.


It’s Not Fair if the Result Isn’t Fair

Utilitarianism

A principle that states that we should strive to achieve “the greatest happiness for the greatest number.”

To achieve this outcome, income must be transferred from the rich to the poor until no one is rich or poor.

Only if everyone’s share of the economic pie is the same as everyone else’s are resources being used in the most efficient way and bringing the greatest attainable total benefit.


The Big Tradeoff

Big tradeoff A tradeoff between efficiency and fairness that recognizes the cost of making income transfers.

The tradeoff is between the size of the economic pie and the degree of equality with which it is shared.

The greater the amount of income redistribution through income taxes, the greater is the inefficiency —the smaller is the economic pie.


Make the Poorest as Well Off as Possible

Harvard philosopher, John Rawls, proposed a modified version of utilitarianism in A Theory of Justice (1971).

Taking all the costs of income transfers into account, the fair distribution of the economic pie is the one that makes the poorest person as well off as possible.

The “fair results” ideas require a change in the results after the game is over. Some say that this in itself is unfair.


It’s Not Fair if the Rules Aren’t Fair

This idea translates into “equality of opportunity.”

Harvard philosopher, Robert Nozick, in Anarchy, State, and Utopia, (1974) argues that the rules must be fair and must respect two principles:

• The state must enforce laws that establish and protect private property.

• Private property may be transferred from one person to another only by voluntary exchange.


A Price Hike in a Natural Disaster

In a competitive market, the price of water jumps from $1 to $8 a bottle.

Water is allocated efficiently.

Nozick says the allocation is fair. But is it fair?

Suppose that the government sets the price at which the shop owner can sell water at $1 a bottle and the government gives everyone an equal share.


If voluntary exchange is permitted, people who value the water at less than $8 a bottle will sell their fair share, which they bought for $1 a bottle.

The same people will consume the water, those who value the water at $8 a bottle.

But there is a difference.

The people who value the water at $8 a bottle but get it for $1 a bottle get a consumer surplus.

The people who value the water for less that $8 a bottle sell the water they got for $1 a bottle for $8 and get a producer surplus.


So different people gain in the two situations.

But only in the competitive market case is there equality of opportunity.

In the second case, everyone except the shop owner can sell water at the market price.

This arrangement discriminates against the shop owners.

Efficiency and Fairness of Markets CHAPTER 6. When you have completed your study of this chapter,...

Documents

Transcript of Efficiency and Fairness of Markets CHAPTER 6. When you have completed your study of this chapter,...